This paper aims to describe non-respondents in the Bank of ItalyÂ’s Survey of Household Income and Wealth (SHIW) and to measure the underestimation of income and wealth attributable to non-response. The evidence confirms that non-response is not random, since it is more frequent among wealthier households. Therefore exclusive use of poststratification procedures based on demographic characteristics only, which are commonly employed, cannot properly adjust for the selection process observed in the SHIW. As to the estimates of average aggregates, the bias seems to be greater for financial assets (the adjusted estimates are from 15 to 31 per cent higher than the unadjusted) than for income (for which the adjustments vary from 5 to 14 per cent, probably owing to a greater asymmetry in the distribution of wealth.
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Find related papers by JEL classification: C42 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: Special Topics - - - Survey Methods C81 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Microeconomic Data C93 - Mathematical and Quantitative Methods - - Design of Experiments - - - Field Experiments D31 - Microeconomics - - Distribution - - - Personal Income and Wealth Distribution
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Carlo V Fiorio & Francesco D'Amuri, 2005.
"Workers' Tax Evasion in Italy,"
Giornale degli Economisti,
GDE (Giornale degli Economisti e Annali di Economia), Bocconi University, vol. 64(2-3), pages 247-270, November.
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